{"action":"Upgrade getkirby/cms to 4.9.1 or later.","affected":[{"fixed":"4.9.1","introduced":"0"},{"fixed":"5.4.1","introduced":"5.0.0"}],"component":"getkirby/cms","cve_ids":["CVE-2026-45368"],"ecosystem":"Packagist","epss":0.00534,"exploited":false,"fixed_versions":["4.9.1","5.4.1"],"ghsa_id":"GHSA-qvjf-922g-pj44","id":"tcs_01M5KF7MNVF29WW3DWN2QGFCH3","modified_at":"2026-09-10T03:51:06.921368471Z","published_at":"2026-05-27T17:42:03Z","references":["https://osv.dev/vulnerability/GHSA-qvjf-922g-pj44","https://github.com/getkirby/kirby/security/advisories/GHSA-qvjf-922g-pj44","https://github.com/getkirby/kirby","https://github.com/getkirby/kirby/releases/tag/4.9.1","https://github.com/getkirby/kirby/releases/tag/5.4.1"],"severity":{"label":"high"},"sources":[{"source":"osv","source_id":"GHSA-qvjf-922g-pj44","url":"https://osv.dev/vulnerability/GHSA-qvjf-922g-pj44"}],"summary":"Kirby CMS vulnerable to cross-site scripting (XSS) from links in KirbyTags and image blocks in the site frontend"}